1SDA056840R1 ABB E4H3200 PR121/P-LI 3200 A 4-Pole Withdrawable Air Circuit Breaker

Why Choose the ABB E4H3200 PR121/P-LI Air Circuit Breaker?

The ABB 1SDA056840R1 is a high-performance SACE Emax E4H air circuit breaker moving part designed for switching and protection in high-current low-voltage electrical distribution systems. Identified as E4H3200 PR121/P-LI, this four-pole withdrawable circuit breaker combines a 3200 A rated current with ABB's PR121/P-LI electronic overcurrent release for dependable overload and instantaneous short-circuit protection.

As part of the ABB SACE Emax / New Emax range, the E4H3200 is engineered for demanding industrial, commercial and infrastructure power distribution applications. Its H short-circuit performance level provides an ultimate short-circuit breaking capacity of 100 kA at 400 V AC and 85 kA at 690 V AC. Its withdrawable moving-part construction supports convenient inspection, servicing and replacement when installed with the corresponding fixed part.

The integrated PR121/P-LI electronic trip unit provides long-time overload (L) and instantaneous short-circuit (I) protection. With a rated operational voltage of up to 690 V AC, four-pole configuration and 3200 A rated uninterrupted current, the 1SDA056840R1 is well suited to main incoming and distribution protection duties where high breaking capacity, four-pole switching and withdrawable construction are required.

Key Advantages

• High-capacity 3200 A air circuit breaker moving part for demanding low-voltage power distribution.
• Four-pole configuration for three-phase four-wire electrical systems.
• PR121/P-LI electronic trip unit provides long-time overload and instantaneous short-circuit protection.
• High 100 kA Icu at 400 V AC ultimate short-circuit breaking capacity.
• Maintains 85 kA Icu at 690 V AC for demanding higher-voltage distribution systems.
• Withdrawable moving-part construction supports convenient inspection, servicing and maintenance.
• Designed for use with the corresponding SACE Emax fixed part or cradle.
• Fitted with four auxiliary contacts and circuit breaker open/closed position indication.

Key Features

• ABB SACE Emax E4H series.
• 3200 A rated uninterrupted current.
• Four-pole circuit breaker configuration.
• PR121/P-LI electronic overcurrent release.
• Long-time overload and instantaneous short-circuit protection.
• 690 V AC rated operational voltage.
• 1000 V rated insulation voltage.
• 12 kV rated impulse withstand voltage.
• 100 kA Icu at 400 V AC.
• 85 kA Icu at 690 V AC.
• Withdrawable moving-part design for serviceable switchgear installations.
• Fitted with four auxiliary contacts.
• Integrated open/closed circuit breaker position indication.

High Breaking Capacity with Withdrawable Circuit Protection

Air circuit breakers such as the ABB E4H3200 provide switching and protection for high-current low-voltage distribution systems. The E4H performance level is designed for installations with substantial prospective fault currents, offering an ultimate short-circuit breaking capacity of 100 kA through the 400–500 V AC range and 85 kA at 660–690 V AC.

The PR121/P-LI electronic release provides long-time overload and instantaneous short-circuit protection, while the four-pole construction enables switching across three-phase four-wire systems. Combined with high breaking performance and withdrawable moving-part construction, the 1SDA056840R1 is suitable for major switchboards and industrial distribution systems where dependable protection and straightforward circuit breaker maintenance are required.

Typical Applications

• Main incoming circuit protection in high-current low-voltage switchboards.
• Four-wire three-phase electrical distribution systems.
• Industrial power distribution systems.
• Transformer secondary distribution and protection.
• Protection of high-current distribution feeders and busbar systems.
• Large commercial and infrastructure electrical installations.
• Manufacturing plants and process facilities.
• High-fault-level switchgear requiring withdrawable circuit breakers.